3721487328 has 240 divisors, whose sum is σ = 11871755280. Its totient is φ = 1136830464.

The previous prime is 3721487327. The next prime is 3721487333. The reversal of 3721487328 is 8237841273.

3721487328 is a `hidden beast` number, since 37 + 214 + 87 + 328 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721487327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6031276 + ... + 6031892.

It is an arithmetic number, because the mean of its divisors is an integer number (49465647).

Almost surely, 2^3721487328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3721487328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5935877640).

3721487328 is an abundant number, since it is smaller than the sum of its proper divisors (8150267952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3721487328 is a wasteful number, since it uses less digits than its factorization.

3721487328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 814 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 3721487328 is about 61003.9943610252. The cubic root of 3721487328 is about 1549.6686531404.

The spelling of 3721487328 in words is "three billion, seven hundred twenty-one million, four hundred eighty-seven thousand, three hundred twenty-eight".